NetScaler ADC and Gateway
CVE-2023-3519: NetScaler ADC and NetScaler Gateway Code Injection
Unauthenticated remote code execution
Published
ExploitedYes, in CISA KEVAdded 19 Jul 2023
Ransomware useKnownPer CISA
SeverityCRITICALCVSS 3.1 9.8
EPSS100%Chance of exploitation in 30 days
Public exploitNot tracked
FixAvailable
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| NetScaler ADC 13.1 | 49.13 or later |
| NetScaler ADC 13.0 | 91.13 or later |
| NetScaler ADC 13.1-FIPS | 37.159 or later |
| NetScaler ADC 12.1-FIPS | 55.297 or later |
| NetScaler ADC 12.1-NDcPP | 55.297 or later |
| NetScaler Gateway 13.1 | 49.13 or later |
| NetScaler Gateway 13.0 | 91.13 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
Unauthenticated remote code execution
Exploitation
CISA lists this CVE as exploited in the wild since 19 Jul 2023, including in ransomware campaigns.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 11 Oct 2026.